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Frequently Asked Questions
A Ploughshare Mixer is often suitable for materials that tend to agglomerate.
Its plough-shaped mixing tools generate intensive circulation of the material, while optional high-speed choppers can break up lumps and agglomerates during mixing.
The final selection should be based on the material characteristics and process requirements.
Vortex mixers are designed for a wide variety of powders, granules, and powder-liquid mixtures.
Typical applications include chemical powders, food ingredients, pharmaceutical powders, animal feed, dry mortar, ceramics, battery materials, fertilizers, pesticides, minerals, refractory materials, and other bulk solids. The actual mixer configuration should be selected according to the physical and chemical properties of the material.
Vortex manufacture a wide range of industrial powder and bulk solids mixing equipment, including:
- Horizontal Ribbon Mixers
- Ploughshare Mixers
- Double Shaft Paddle Mixers (Paddle Mixers / “No-Gravity” Mixers)
- Conical Twin-Screw Mixers
- Vertical Screw Ribbon Mixers
- Double Cone Mixers
- V-Type Mixers
- 3D Motion Mixers
- Customized mixing systems and complete mixing lines
The most suitable mixer depends on your materials, production capacity, mixing ratio, required mixing time, and process conditions.
Mixer capacity should be evaluated using both the total vessel volume and the effective working volume. The required volume depends on material bulk density, batch weight, filling ratio and the mixing principle of the selected machine. A mixer should not normally be filled to its total geometric volume because sufficient space is required for material movement and effective mixing. For this reason, selecting a mixer based only on vessel volume can result in an unsuitable configuration.
The appropriate industrial powder mixer depends on several factors, including:
- Material characteristics
- Bulk density
- Particle size
- Required mixing uniformity
- Batch size or production capacity
- Moisture content
- Whether heating or drying is required
- Whether liquid addition is required
- Required discharge configuration
- Production and automation requirements
Vortex provides different powder mixer designs so that equipment can be selected according to the specific process requirements.
Vortex powder mixer selection depends on several factors, including:
- Material type and characteristics
- Bulk density and particle size
- Material flowability
- Moisture content
- Viscosity
- Mixing ratio
- Batch size or required production capacity
- Whether liquid addition is required
- Required mixing uniformity
- Temperature, pressure, vacuum, or other process requirements
Vortex engineers can recommend a suitable powder mixer based on your material and process requirements.
Yes, We can supply simple stand alone panels or automated PLC controlled systems. We normally install and test all controls on our mixers before they are shipped.
Yes, we normally test the mixers before they are shipped and mark out the wire need to connect on the control box.
We manufacture specialty mixing equipment for powder & bulk materials. Included are ribbon blender, plough mixer, conical screw mixer, twin shaft paddle mixer, V blender, double cone blender and other auxiliary equipment such as screw conveyor, quantitive auger filler.
We sell across the world, our cusotmers distribute 5 continents.
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Everything You Need to Know About the Conical Vacuum Dryer Screw Nauta Dryer
Introduction
The Nauta Conical Vacuum Dryer Screw Nauta Dryer is a high‑performance industrial dryer designed to deliver reliable and efficient drying when processing powders granules pastes and slurries. It has conical vessel and screw agitator under vacuum, thus suitable to process sensitive materials that are characteristic in pharmaceutical food and chemical industries.
This paper discusses the principle of operation of the Nauta dryer its main characteristics uses and the reason why it is preferred among the manufacturers all over the globe.
What is the Conical Vacuum Dryer Screw Nauta Dryer?
The Nauta dryer is a conical vacuum dryer with an internal screw agitator that stirs raw material inside a vessel to achieve uniform drying. It is an internationally recognized standard GMP satisfaction that implements the system and has undergone extensive applications in biological chemical and food manufacturing in pharmaceutical industries .
It processes a very wide variety of input such as liquid filter cake filter cake powders filter cake particles even toxic or explosive materials under controlled vacuum and temperature.
Working Principle
The drying is achieved through a vacuum that enables evaporation to take place at the low temperature to avoid degrading heat sensitive compounds. The product is heated by means of a hot jacket and the media can be steam, hot oil or water. In the meantime, the screw agitator sweeps material upwards and towards the surface which causes the convective mixing and shear along the vessel wall .
The agitator is mounted within an orbital arm to spin the screw in order to have a uniform mixing and heat transfer. Vapour is evaporated by a dust filter that ensures lesser contamination of the vacuum system .
The solvents are recovered in a condenser which comes either before or after the vacuum pump in cases of solvents. The weight of condensate or sampling of product under vacuum is used to control moisture.
Key Features
Conical self-draining construction: No product hold-up and cleaning of the vessel is very fast and complete. Cantilever screw agitator gives low shear mixing actions whilst transferring the material across the conical vessel to be dried uniformly without much segregation.
Vacuum operation: low temperature drying to maintain the integrity of the product and eradicating the possibility of thermal degradation.
Solvent recovery and moisture control: Incorporated condenser and sample port facilities help in effective processing of solvent and accurate end-point control.
Large range of volumes: can be supplied in batch sizes as small as 5 litres and as large as more than 20 000 litres and is suited to pilot through to full-scale industrial applications.
Hygienic construction: can be supplied in stainless steel AISI-316L AISI-904L Hastelloy etc and can be cGMP, FDA and EHEDG-compliant. Sterile processing is supported by the optional SIP cleaning processes and CIP cleaning processes.
Multi-function: this system can be used to dry but also can carry out reaction crystallisation heating cooling de-aeration and sterilisation all within the same vessel so can have the benefit of process concentration and saving on space.
Specifications and Materials Technical
The customizable options are provided by many manufacturers like Inc Machine partner producers. Common materials of construction are AISI 304 316 and sophisticated alloys when there is risk of high-purity or corrosion. The surface area is increased by thermal jackets and jacket and spiral belt can be heated at the same time by the thermal jackets to achieve heat transfer.
Sizes vary between pilot plants used in the laboratory or small batch, up to industrial scale models that process thousands of litres. Options can be interchangeable agitator details and automation such as CIP/SIP systems which are provided to meet the safety and compliance details.
Industrial Apps
Pharmaceuticals
Excipients, sterile materials and APIs intermediates are dried. Low shear gentleness maintains the potency and purity and contamination is minimal with the limited vacuum .
Fine Chemical and Agro-chemicals
The same vessel allows the possibility of processes like crystallisation de-aeration reactions and granulating to take place. Compliance and efficiency are aided by solvent recovery .
Nutraceuticals and Food
Processing powders botanical extracts protein concentrates flavours heat sensitive bio actives. The hygienic design will minimise contamination and promote traceability .
Make-up and Perfumes
Preservation and production of natural and sensitive paste emulsions clays and natural additives by drying them at low temperatures in vacuums without degrading and causing refrigeration loss does not happen.
Other Applications
Comprises adhesive pigments on additive manufacturing on coatings of polymer food additives and resins drying down of materials and cooling of materials evenness in vacuum dearation and sterilisation .
Advantages of using Nauta screw vacuum dryer
Consistent high-quality drying and operative degradation
- Effective mixing and low residence times as high throughput High throughput in terms of effective mixing and short residence times
- Energy almost efficient working through vacuum drying as well as heat jacket
- Easy cleaning and maintenance since geometry is conical and also has few dead zones
- The flexibility of process allows a number of operations under a single unit to be performed
- Flexibility of the pilot to full scale, scalable and model flexibility
- Pharmaceutical food and chemical manufacturing regulatory prepared
Conclusion
The Conical Vacuum Dryer Screw Nauta Dryer is a state‑of‑the‑art solution designed to meet stringent industrial requirements. The Nauta dryer provides efficiency, compliances and versatility; it can process heat sensitive, shear sensitive and solvent containing materials and use only one multifunctional vessel.
Be it the pharmaceutical chemical manufacturing food or specialty manufacturing requires the mixing and vacuum drying manufacturing abilities of this system acquires the high purity of the manufacturing process and consistency, and lower operations costs.
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